US11653429B2 - Lighting apparatus comprising a light engine with a plurality of interconnection layers - Google Patents
Lighting apparatus comprising a light engine with a plurality of interconnection layers Download PDFInfo
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- US11653429B2 US11653429B2 US17/188,582 US202117188582A US11653429B2 US 11653429 B2 US11653429 B2 US 11653429B2 US 202117188582 A US202117188582 A US 202117188582A US 11653429 B2 US11653429 B2 US 11653429B2
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Images
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
- F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
- F21V23/005—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate is supporting also the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/05—Insulated conductive substrates, e.g. insulated metal substrate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/0929—Conductive planes
- H05K2201/09309—Core having two or more power planes; Capacitive laminate of two power planes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09972—Partitioned, e.g. portions of a PCB dedicated to different functions; Boundary lines therefore; Portions of a PCB being processed separately or differently
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10106—Light emitting diode [LED]
Definitions
- Fluorescent lighting systems are widely used and many fluorescent lighting systems are designed to accommodate long slender fluorescent tubes.
- LED based lighting systems may be more efficient, have a longer lifespan, and be more controllable (e.g. colour, colour temperature) compared to traditional fluorescent lighting systems.
- LED based lighting systems generate a relatively large amount of heat and certain LED based lighting systems require a large number of LEDs to achieve a desired lumen output. These factors may limit the layout of LEDs in LED based lighting systems and make it relatively difficult to modify the encasements used in fluorescent lighting systems for use with LEDs.
- a light engine comprising: a printed circuit board; and a plurality of LED groups on said printed circuit board coupled between a power supply input and a respective one of a plurality of return paths associated with said LED group; each of said LED groups comprising a plurality of LED sets coupled in parallel; each of said LED sets comprising a plurality of LEDs coupled in series; wherein a first one of said LED groups is comprised of at least a subset of LEDs having a first colour, and a second one of said LED groups is comprised of at least a subset of LEDs having a second colour different from said first colour; wherein at least one of said LEDs having a first colour from said first LED group and at least one of said LEDs having a second colour from said second LED group are intertwined on said light engine.
- a light engine comprising: a printed circuit board; and a plurality of LED groups on said printed circuit board coupled between a respective one of a plurality of power supply inputs associated with said LED group and a return path; each of said LED groups comprising a plurality of LED sets coupled in parallel; each of said LED sets comprising a plurality of LEDs coupled in series; wherein a first one of said LED groups is comprised of at least a subset of LEDs having a first colour, and a second one of said LED groups is comprised of at least a subset of LEDs having a second colour different from said first colour; wherein at least one of said LEDs having a first colour from said first LED group and at least one of said LEDs having a second colour from said second LED group are intertwined on said light engine.
- FIG. 1 is a schematic diagram illustrating the layout of one layer of an embodiment of the invention
- FIG. 2 is a schematic diagram illustrating the layout of another layer of the embodiment of the invention shown in FIG. 1 ;
- FIG. 3 is a schematic diagram illustrating the layout of an embodiment of a LED set in greater detail
- FIG. 4 is a schematic diagram of an alternative embodiment of a LED set
- FIG. 6 is a schematic diagram of an embodiment of a control unit in greater detail
- LEDs in many LED based lighting systems may be limited by thermal management issues and ensuring that enough area remains to facilitate the required interconnections between LEDs where a large number of LEDs are used.
- Certain applications may employ metal core printed circuit boards (MCPCBs) to assist in managing the heat generated by a large number of LEDs.
- MCPCBs metal core printed circuit boards
- many existing designs suffer from certain shortcomings, including the ability to include a plurality of controllable LEDs in a narrow or small footprint.
- Light engine 10 may also have at least one LED group that may be independently controlled by control unit 120 ( FIG. 5 ) in certain embodiments of the invention.
- Each LED group may be comprised of at least one LED set.
- the layout of the LED sets in a LED group may vary depending on the particular application. For example, the LED sets making up a LED group may be repeated periodically along a length of light engine 10 .
- LED group 150 may include LED sets 30 and 38 .
- another LED group (not shown) may include LED sets 32 and 40 .
- the LED sets in a LED group may be repeated along a length of light engine 10 periodically depending on the number of LED groups employed in the light engine. For example, for a light engine having a modulo M architecture with M LED groups, each LED group may include every 1/Mth LED set. With reference to FIG. 1 , each LED group may include every fourth LED set as four LED groups (not specifically enumerated) may be employed.
- Each LED group may have a return path associated with the LED group to complete the circuit to a power supply return 114 in order to allow a current to flow from power supply output 112 and through the LEDs of each LED group.
- each LED group may have a separate return path.
- LED group 150 may have LED sets 30 and 38 that may be coupled between power supply input 50 and return path 80 .
- LED sets 32 and 40 of a second LED group may be coupled to return path 82 .
- LED sets 34 and 36 may be members of different LED groups and be coupled to return paths 84 and 86 respectively.
- LED sets mounted to and coupled together using interconnection layer 22 may be coupled to return paths disposed in another interconnection layer, interconnection layer 24 , using layer interconnection elements, such as vias according to known methods.
- LED sets 30 and 38 may be coupled to return path 80 using layer interconnection elements 60 and 68 .
- layer interconnection elements 62 , 64 , 66 , and 70 may be employed to connect LED sets 32 , 34 , 36 , and 40 to return paths 82 , 84 , 86 , and 82 respectively.
- all LED sets in a particular LED group may be coupled to the same return path using layer interconnection elements at various points on light engine 10 .
- Such a configuration allows the LED groups to be controlled independently as described below.
- four return paths and LED groups are shown in light engine 10 any number of return paths and LED groups may be used, for example, eight LED groups may be used in certain applications.
- Light engine 200 may have a substrate 202 , which may be a multi-layer metal core printed circuit board, and may have a first interconnection layer 204 .
- Power supply inputs 250 a and 250 b may be configured to run adjacent to two edges of substrate 202 in layer 204 .
- a plurality of LEDs may be mounted between power supply inputs 250 a and 250 b in a variety of configurations. For example, LEDs may be mounted in layer 204 in to parallel rows, parallel columns, diagonally, or in another arrangement. LED sets may be constructed by interconnecting LEDs from each row in an alternating pattern along the length of the rows.
- Light engine 200 may have additional LED sets (not shown) to form a plurality of LED groups.
- the LED sets in each LED group may be connected to a separate return path (not shown) associated with each LED group to allow each LED group to be controlled independently.
- power supply inputs 250 a and 250 b and return paths should be of a sufficient width to adequately handle the expected current, which may limit the width W of light engine 200 .
- the length L of light engine 200 may be at least ten times the width W.
- Lighting apparatus 100 may have a power supply 110 having a power supply output 112 and power supply return 114 coupled to control unit 120 .
- Power supply 110 may be a constant voltage power supply or alternatively a constant current power supply in certain embodiments.
- Control unit 120 may be coupled to light engine 10 using mated connectors 124 of control unit 120 and connector 126 of light engine 10 . The mated connectors may be connected together to allow power supply input 50 , which may be coupled to power supply output 112 to be provided to light engine 10 .
- Connector 124 of control unit 120 may be a female connector adapted to be physically connected with male connector 126 of light engine 10 .
- Connector 128 of light engine 10 may be a female connector adapted to be physically connected to male connector 130 of light engine 310 .
- Such an arrangement allows either of light engines 10 or 310 to be physically connected to control unit 120 using connectors 126 or 130 and allows other light engines to be physically connected to light engines 10 or 310 . This may increase the modularity of a lighting apparatus comprising light engines 10 and 310 .
- female connectors may be model no. 20-9159-005-101-116 or 22-9159-005-101-116 connectors and male connectors may be model no. 10-9159-005-101-116 connectors from AVX Corporation of South Carolina, U.S.A.
- connectors 124 and 126 may couple return paths 80 , 82 , 84 , and 86 between light engine 10 and control unit 10 to provide a conductive path for each return path to power supply return 114 .
- Light engine 10 may also have a connector 128 adapted to connect to connector 130 of light engine 310 so that power supply input 50 and return paths 80 , 82 , 84 , and 86 may be coupled between light engines 10 and 310 .
- Light engine 310 may also have a connector 132 that may be coupled to another light engine (not shown) in a similar fashion to maintain connectivity of power supply input 50 and return paths 80 , 82 , 84 , and 86 between the various light engines.
- Light engines 10 and 310 may have the same or different configurations of LED groups and sets. Light engines 10 and 310 may be configured to have the same LED groups coupled to the same return path so that the LED groups on both of light engines 10 and 310 may be simultaneously controlled by control unit 120 . Alternatively, other configurations of LED sets and LED groups may be employed in certain applications, noting that the control unit may be limited to simultaneously controlling LED sets coupled to each separate return path. Although four return paths are shown in FIG. 5 , any other number of return paths may be used, for example, eight return paths may be used in certain applications. In certain embodiments, it may be possible to include four return paths in a light engine having a width of one inch and eight return paths in a light engine having a width of 1.75 inches.
- Control unit 120 may be configured to couple power supply output 112 to power supply input 50 of light engine 10 to provide a source of power to light engine 10 and other light engines that may be coupled to light engine 10 .
- Control unit 120 may also have a controller 126 connected to switching elements 128 , 132 , 134 , and 136 so that controller 126 may selectively activate and deactivate each switching element to allow a current to flow from power supply output 112 , through light engines 10 and 310 , and back to power supply return 114 .
- Switching element 128 may be implemented as a NMOS transistor having its gate coupled to activation output 130 , its drain coupled to return path 80 , and its source coupled to power supply return 114 .
- the NMOS transistor may allow a current to flow from drain to source and similarly prevent a current from flowing when activation output is set to low in a known manner.
- Control unit 120 may selectively activate all LED sets connected to each return path independently in this configuration. In embodiments where all LED sets in a particular LED group are all connected to the same return path, each LED group may be controlled independently by control unit 120 . This may allow control unit 120 to provide a separate pulse width modulated (PWM) signal to each LED group. The ability to provide a separate PWM signal to each LED group may reduce the load on the power supply as certain algorithms may be used by controller 126 to minimize the current variation by staggering the PWM signal provided to each LED group compared to simultaneously turning on and off all LED groups at once.
- PWM pulse width modulated
- At least one LED from at least two different LED groups may be mounted on light engine 10 or light engine 200 to be adjacent to or in close proximity to each other. More specifically, at least one LED from at least two different LED groups may be mounted so that the light radiated from these LEDs at least partially overlaps before the emitted light reaches optics (not shown) in a lighting apparatus.
- the lighting apparatus may also be constructed with particular optics to optimize the mixing of light having different colours or colour temperatures according to methods known in the art. This may allow for a more uniform light output from the lighting apparatus while allowing mixing of the emitted light where all or a subset of LEDs from at least two different LED groups have different colours or colour temperatures. For example, with reference to FIG.
- control unit 120 may be omitted and replaced with pass through board 160 .
- LED groups may not be controlled independently and are simply provided with the signal from power supply output 112 .
- Power supply 110 may provide a continuous power output or in certain embodiments be a switching power supply operable to provide a PWM signal.
- Pass through board 160 may be coupled to power supply 110 using connector 162 and light engine 10 using connector 164 so that power supply output 112 may be coupled to power supply input 50 of light engine 10 .
- Connector 164 may also facilitate the coupling of return paths 80 , 82 , 84 , and 86 from light engine 10 to power supply return 114 via connector 162 .
- control unit 120 located in a remote location or elsewhere in the encasement of a lighting apparatus and connected to at least one light engine via a cable rather than being physically connected to one end of a light engine as shown in FIG. 5 .
- control unit 120 may be located below the light engine or elsewhere in certain embodiments of a lighting apparatus.
- the control unit may continue to be able to control a plurality of light engines that may be coupled together as shown in FIG. 5 in a similar manner.
- Another embodiment of the invention may include switching elements that may be controlled by controller 126 , between power supply output 112 and the LED groups of light engine 10 , instead of having the switching elements coupled between the return paths and the power supply return 114 .
- separate power supply inputs would be provided to the LED sets of each LED group and all LED sets may share a common return path or use a plurality of return paths.
- the control unit illustrated in FIG. 6 could be modified to use the power supply input 50 as a return path that would be connected to power supply return 114 rather than power supply output 112 .
- return paths 80 , 82 , 84 , and 86 may be used as power supply inputs to each LED group and be coupled to power supply output 112 instead of power supply return 114 .
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Optics & Photonics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims (20)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/188,582 US11653429B2 (en) | 2011-03-25 | 2021-03-01 | Lighting apparatus comprising a light engine with a plurality of interconnection layers |
US18/190,089 US20230380031A1 (en) | 2011-03-25 | 2023-03-26 | Lighting apparatus comprising a light engine with a plurality of interconnection layers |
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161467914P | 2011-03-25 | 2011-03-25 | |
US13/423,142 US8939604B2 (en) | 2011-03-25 | 2012-03-16 | Modular LED strip lighting apparatus |
US14/606,013 US9347631B2 (en) | 2011-03-25 | 2015-01-26 | Modular LED strip lighting apparatus |
US15/136,599 US9565727B2 (en) | 2011-03-25 | 2016-04-22 | LED lighting apparatus with first and second colour LEDs |
US15/426,049 US9918362B2 (en) | 2011-03-25 | 2017-02-06 | Control unit and lighting apparatus including light engine and control unit |
US15/919,147 US10251229B2 (en) | 2011-03-25 | 2018-03-12 | Light engine and lighting apparatus with first and second groups of LEDs |
US16/286,588 US10568170B2 (en) | 2011-03-25 | 2019-02-27 | Lighting apparatus with a plurality of light engines |
US16/792,170 US10939527B2 (en) | 2011-03-25 | 2020-02-14 | Light engine configured to be between a power source and another light engine |
US17/188,582 US11653429B2 (en) | 2011-03-25 | 2021-03-01 | Lighting apparatus comprising a light engine with a plurality of interconnection layers |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/792,170 Continuation US10939527B2 (en) | 2011-03-25 | 2020-02-14 | Light engine configured to be between a power source and another light engine |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/190,089 Continuation US20230380031A1 (en) | 2011-03-25 | 2023-03-26 | Lighting apparatus comprising a light engine with a plurality of interconnection layers |
Publications (2)
Publication Number | Publication Date |
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US20210293403A1 US20210293403A1 (en) | 2021-09-23 |
US11653429B2 true US11653429B2 (en) | 2023-05-16 |
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/423,142 Active 2032-08-28 US8939604B2 (en) | 2011-03-25 | 2012-03-16 | Modular LED strip lighting apparatus |
US14/606,013 Active US9347631B2 (en) | 2011-03-25 | 2015-01-26 | Modular LED strip lighting apparatus |
US15/136,599 Active US9565727B2 (en) | 2011-03-25 | 2016-04-22 | LED lighting apparatus with first and second colour LEDs |
US15/426,049 Active US9918362B2 (en) | 2011-03-25 | 2017-02-06 | Control unit and lighting apparatus including light engine and control unit |
US15/919,147 Active US10251229B2 (en) | 2011-03-25 | 2018-03-12 | Light engine and lighting apparatus with first and second groups of LEDs |
US16/286,588 Active US10568170B2 (en) | 2011-03-25 | 2019-02-27 | Lighting apparatus with a plurality of light engines |
US16/792,170 Active US10939527B2 (en) | 2011-03-25 | 2020-02-14 | Light engine configured to be between a power source and another light engine |
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US10939527B2 (en) | 2021-03-02 |
US20210293403A1 (en) | 2021-09-23 |
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US20160309559A1 (en) | 2016-10-20 |
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